US3167408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dryer hood construction for web material
Assignee: Beloit Corp
•
Filing: 1961-11-16
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Granted: 1965-01-26
•
Expires: 1981-11-16
Abstract
No abstract record available.
Inventors
- 👤 Edgar J Justus
- 👤 Lawrence A Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:55
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN AN APPARATUS PARTICULARLY ADAPTED FOR DRYING A TRAVELING FIBROUS WEB IN THE MAKING OF PAPER; (A) A HOOD, (B) A PRESSURE ZONE WITHIN SAID HOOD, (C) A VACUUM ZONE WITHIN SAID HOOD, (D) AT LEAST ONE AIR FAN IN SAID HOOD ESTABLISHING SAID PRESSURE AND VACUUM ZONES, (E) AN AIR HEATER IN SAID PRESSURE ZONE, (F) A PLENUM IN COMMUNICATION WITH SAID PRESSURE ZONE HAVING A PLURALITY OF AIR IMPINGEMENT NOZZLES LEADING THEREFROM, (G) EXHAUST PASSAGEWAYS LEADING FROM THE TRAVELING WEB AND PASSING THROUGH SAID PLENUM AND HAVING COMMUNICATION WITH SAID VACUUM ZONE, (H) AND SPACED HELICAL BAFFLES EXTENDING ALONG SAID PLENUM AND DIVIDING SAID PLENUM INTO A PLURALITY OF PLENUM CHAMBERS HAVING HELICAL SIDE WALLS BLENDING THE AIR PASSING THROUGH ADJACENT PLENUM CHAMBERS ONTO THE TRAVELING WEB.
Claim 2
Dependent Claim
129 words
IN AN APPARATUS PARTICULARLY ADAPTED FOR DRYING A TRAVELING FIBROUS WEB IN THE MAKING OF PAPER; (A) A HOOD, (B) A PRESSURE ZONE WITHIN SAID HOOD, (C) A VACUUM ZONE WITHIN SAID HOOD, (D) AT LEAST ONE AIR FAN IN SAID HOOD ESTABLISHING SAID PRESSURE AND VACUUM ZONES, (E) AN AIR HEATER IN SAID PRESSURE ZONE, (F) A PLENUM IN COMMUNICATION WITH SAID PRESSURE ZONE HAVING A PLURALITY OF AIR IMPINGEMENT NOZZLES LEADING THEREFROM, (G) EXHAUST PASSAGEWAYS LEADING FROM THE TRAVELING WEB AND PASSING THROUGH SAID PLENUM AND HAVING COMMUNICATION WITH SAID VACUUM ZONE, (H) AND SPACED HELICAL BAFFLES EXTENDING ALONG SAID PLENUM AND DIVIDING SAID PLENUM INTO A PLURALITY OF PLENUM CHAMBERS HAVING HELICAL SIDE WALLS BLENDING THE AIR PASSING THROUGH ADJACENT PLENUM CHAMBERS ONTO THE TRAVELING WEB.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-26 | 1968-07-27 | 1969-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-26 | 1972-07-27 | 1973-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-26 | 1976-07-27 | 1977-01-26 | $7700.00 | Window Closed / Lapsed |